body {
  padding:0;
  margin: 0;
}
.tab-bar {
  display: flex;
  background-color: #f6f6f6;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;

  box-shadow: 0 -1px 1px rgba(100, 100, 100, 0.1)
}

.tab-bar-item {
  flex:1;
  text-align: center;
  height: 3rem;
}